A state monitoring system for a range finder remote control box

Abstract

The utility model discloses a kind of state monitoring systems for range finder remote control box, it is related to range finder remote control box field, system includes photosensitive signal acquisition module, comparison module, opto-coupler isolation module, drive module and relay module.Through photosensitive resistance response remote control box on the bright and dark of working pilot lamp, output corresponding photosensitive signal;Comparison module compares photosensitive signal with reference voltage, control output level;Opto-coupler isolation module realizes signal transmission and electrical isolation;Drive module responds opto-coupler output, control triode on-off;When triode conduction, relay module is attracted, and external sound-light alarm is connected.When range finder is abnormal, pilot lamp is extinguished, system automatically triggers sound-light alarm, realizes the extension and amplification of alarm signal.The utility model solves the problem that original factory remote control box alarm sound is small, without signal output interface, improves the timeliness and reliability of monitoring, applicable to the equipment state monitoring in noisy environment such as airport.

Description

Technical Field

[0001] This utility model relates to the field of remote control boxes for rangefinders, and in particular to a status monitoring system for remote control boxes for rangefinders. Background Technology

[0002] The THALES415 rangefinders currently in service at Ningbo Airport are equipped with a point-to-point remote control box provided by the manufacturer for real-time status monitoring. However, this remote control box has significant shortcomings in practical applications: firstly, when the equipment malfunctions, the alarm sound emitted by the remote control box is relatively weak and the volume cannot be adjusted. In the complex and noisy operating environment of the airport, it is difficult for on-duty personnel to detect the alarm in a timely manner, posing a safety hazard; secondly, the manufacturer has not provided users with an alarm data acquisition interface, making it impossible to obtain alarm signals for secondary development or integration with external monitoring systems. Therefore, there is currently no monitoring device on the market that can effectively acquire the status signals of the THALES415 rangefinder remote control box and extend and amplify the alarm sound, thus restricting the reliability and intelligence level of equipment monitoring. Utility Model Content

[0003] To monitor alarm signals and amplify alarm sounds without an open alarm data acquisition interface, this invention proposes a status monitoring system for a rangefinder remote control box, comprising:

[0004] The photosensitive signal acquisition module is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder and output a photosensitive signal; when the working indicator light is on, the photosensitive signal voltage increases; when the working indicator light is off, the photosensitive signal voltage decreases.

[0005] The comparison module includes a voltage comparator U2A, whose non-inverting input receives the photosensitive signal; when the photosensitive signal voltage is higher than the reference voltage, the voltage comparator U2A outputs a high level; when the photosensitive signal voltage is lower than the reference voltage, the voltage comparator U2A outputs a low level.

[0006] The optocoupler isolation module includes an optocoupler D5, whose input-side light-emitting diode anode is connected to a DC power supply via a pull-up resistor, and whose cathode is connected to the output terminal of the voltage comparator U2A; when the voltage comparator U2A outputs a high level, the optocoupler D5 is cut off; when the voltage comparator U2A outputs a low level, the optocoupler D5 is turned on.

[0007] The driving module includes a transistor Q1, whose base is connected to the emitter of the output side of the optocoupler D5, whose collector is connected to the working power supply through a bias resistor, and whose emitter is grounded; when the optocoupler D5 is turned on, the base of the transistor Q1 is at a high level, and the transistor Q1 is turned on; when the optocoupler D5 is turned off, the base of the transistor Q1 is at a low level, and the transistor Q1 is turned off.

[0008] The relay module includes a relay coil and a switch contact. One end of the relay coil is connected to a power supply, and the other end is connected to the collector of the transistor Q1. When the transistor Q1 is turned on, the relay coil is energized and closed, and one end of its normally open contact is closed with one end of the common terminal. When the transistor Q1 is turned off, the relay coil is de-energized and released, and the normally open contact is disconnected from the common terminal.

[0009] The other end of the normally open contact is connected to an audible and visual alarm, and the other end of the common terminal is connected to the VCC power supply.

[0010] Furthermore, the condition monitoring system also includes:

[0011] The power conversion module is used to connect to a 12V DC power supply and divide the 12V DC power supply into two outputs: one output is used as the working power supply to directly supply the drive module, relay module and audible and visual alarm; the other output is regulated and converted into a 5V DC power supply to supply power to the photosensitive signal acquisition module, comparison module and optocoupler isolation module.

[0012] Furthermore, the photosensitive signal acquisition module includes:

[0013] The filtering unit is used to connect to the 5V DC power supply output from the power conversion module and filter it before outputting the output.

[0014] The photosensitive unit includes a photoresistor R3, a fourth capacitor C4, and a second resistor R2; wherein:

[0015] The photoresistor R3 is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder;

[0016] One end of the photoresistor R3 is connected to one end of the fourth capacitor C4 and then connected to the output of the filter unit. The other end of the photoresistor R3 is connected to one end of the second resistor R2 and the other end of the fourth capacitor C4, and serves as the output of the photosensitive signal, connected to the non-inverting input of the voltage comparator U2A in the comparison module. The other end of the second resistor R2 is grounded.

[0017] Furthermore, the filtering unit includes: a first capacitor C1 and a first resistor R1; wherein:

[0018] One end of the first resistor R1 is connected to one end of the first capacitor C1 and then connected to the 5V DC power output by the power conversion module. The other end is connected to the other end of the first capacitor C1 and then grounded.

[0019] Furthermore, the comparison module also includes: potentiometer VR1, fifth capacitor C5, fourth resistor R4, fifth resistor R5, and third light-emitting diode D3; wherein:

[0020] The potentiometer VR1 is used to set the reference voltage, and its sliding terminal is connected to the inverting input terminal of the voltage comparator U2A; one fixed terminal of the potentiometer VR1 is connected to the output terminal of the filter unit, and the other fixed terminal is grounded.

[0021] The non-inverting input of the voltage comparator U2A is connected to the output of the photosensitive signal acquisition module;

[0022] The positive terminal of the voltage comparator U2A is connected to one end of the fifth capacitor C5 and then connected to the 5V DC power output of the power conversion module; the other end of the fifth capacitor C5 is grounded.

[0023] The ground terminal of the voltage comparator U2A is grounded;

[0024] The output terminal of the voltage comparator U2A is connected in sequence to one end of the fourth resistor R4 and the cathode of the third light-emitting diode D3, and then connected to the cathode of the light-emitting diode on the input side of the optocoupler D5 in the optocoupler isolation module.

[0025] The anode of the third light-emitting diode D3 is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the other end of the fourth resistor R4 and then connected to the 5V DC power output by the power conversion module.

[0026] Furthermore, when the voltage comparator U2A outputs a high level, the third LED D3 is turned off and extinguished, indicating that the working indicator light of the rangefinder remote control box is lit.

[0027] When the voltage comparator U2A outputs a low level, the third LED D3 is turned on and illuminates, indicating that the working indicator light of the rangefinder remote control box is off.

[0028] Furthermore, the optical coupling isolation module also includes:

[0029] Pull-up resistor R6 and bias resistor R8; one end of the pull-up resistor R6 is connected to the anode of the light-emitting diode on the input side of optocoupler D5, and the other end is connected in sequence to the other end of the fifth resistor R5 and the other end of the fourth resistor R4, and then connected to the 5V DC power supply output by the power conversion module; the emitter of the output side of optocoupler D5 is connected to the base of transistor Q1 in the driver module, and the collector is connected to one end of bias resistor R8; the other end of bias resistor R8 is connected to VCC power supply.

[0030] Furthermore, the driving module also includes: a sixth light-emitting diode D6 and a ninth resistor R9; wherein:

[0031] The cathode of the sixth light-emitting diode D6 is connected to the collector of the transistor Q1, and the anode is connected to one end of the ninth resistor R9; the other end of the ninth resistor R9 is connected to the other end of the bias resistor R8 and then connected to the VCC power supply.

[0032] Furthermore, when transistor Q1 is turned on, the sixth LED D6 is turned on and illuminates, indicating that the drive module is working and the relay coil is energized; when transistor Q1 is turned off, the sixth LED D6 is turned off, indicating that the drive module is not working.

[0033] Furthermore, the relay module also includes: a seventh diode D7;

[0034] One end of the relay coil is connected in sequence to the cathode of the seventh diode D7, the other end of the ninth resistor R9, and the other end of the bias resistor R8, and then connected to the VCC power supply; the other end of the relay coil is connected to the anode of the seventh diode D7 and then to the collector of the transistor Q1.

[0035] Compared with the prior art, the present invention has at least the following beneficial effects:

[0036] (1) By setting up a photosensitive signal acquisition module, the present invention can collect the on / off status of the normal working indicator light on the remote control box of the rangefinder in a non-contact manner in real time. By using a photoresistor to sense the changes in light and convert them into electrical signals, the automatic monitoring of the equipment's operating status is realized, avoiding the lag of manual inspection and improving the real-time performance and reliability of monitoring.

[0037] (2) The present invention introduces an adjustable potentiometer VR1 in the comparison module to set the reference threshold value of the voltage comparator. The trigger threshold can be flexibly adjusted according to the on-site lighting conditions or the difference in the brightness of the indicator lights, which enhances the adaptability and stability of the system, ensures that the equipment status can be accurately identified under different environmental conditions, and improves the monitoring accuracy.

[0038] (3) By setting up an optocoupler isolation module, the present invention realizes electrical isolation between the low-voltage signal processing circuits such as the photosensitive signal acquisition module and the comparison module and the relay module, effectively blocking the transmission of the reverse electromotive force generated by the relay coil during the switching process and the high-voltage side interference to the front-end circuits such as the photosensitive signal acquisition module and the comparison module, avoiding false triggering or device damage, and significantly improving the anti-interference capability, working stability and long-term operation safety of the system.

[0039] (4) This invention drives an external sound and light alarm through a relay module, which automatically triggers a loud sound and light alarm when the equipment is abnormal (normal light is off). This extends and amplifies the weak alarm sound of the original remote control box, solves the problem that alarms are not easy to detect in the noisy environment of the airport, and significantly improves the response speed and handling efficiency of the duty personnel to equipment failure. Attached Figure Description

[0040] Figure 1 This is a circuit diagram of a status monitoring system for a rangefinder remote control box;

[0041] Figure 2 This is the circuit diagram for the power conversion module;

[0042] Figure 3 This is a circuit diagram of the photosensitive signal acquisition module and the comparison module;

[0043] Figure 4 This is a circuit diagram of the optocoupler isolation module, the driver module, and the relay module. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] To monitor alarm signals and amplify alarm sounds without an open alarm data acquisition interface, such as... Figure 1 As shown, this utility model proposes a status monitoring system for a rangefinder remote control box; it should be noted that, in order to more clearly demonstrate... Figure 1 The content of this embodiment is broken down into Figure 3 and Figure 4 .like Figures 1 to 4 As shown, the status monitoring system includes:

[0046] The photosensitive signal acquisition module is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder and output a photosensitive signal; when the working indicator light is on, the photosensitive signal voltage increases; when the working indicator light is off, the photosensitive signal voltage decreases.

[0047] The photosensitive signal acquisition module includes:

[0048] The filtering unit is used to connect to the 5V DC power supply output from the power conversion module and filter it before outputting the output.

[0049] The filtering unit includes: a first capacitor C1 and a first resistor R1; wherein:

[0050] One end of the first resistor R1 is connected to one end of the first capacitor C1 and then connected to the 5V DC power output by the power conversion module. The other end is connected to the other end of the first capacitor C1 and then grounded.

[0051] The photosensitive unit includes a photoresistor R3, a fourth capacitor C4, and a second resistor R2; wherein:

[0052] The photoresistor R3 is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder;

[0053] One end of the photoresistor R3 is connected to one end of the fourth capacitor C4 and then connected to the output of the filter unit. The other end of the photoresistor R3 is connected to one end of the second resistor R2 and the other end of the fourth capacitor C4, and serves as the output of the photosensitive signal, connected to the non-inverting input of the voltage comparator U2A in the comparison module. The other end of the second resistor R2 is grounded.

[0054] This embodiment uses an external photoresistor R3 placed close to the "normal" indicator light on the rangefinder's remote control box to collect the indicator light's status in real time in a non-contact manner. The photoresistor converts the sensed light changes into an electrical signal, which is then input to the photosensitive signal acquisition module. Subsequent circuitry processes the photosensitive signal through a comparison module to determine the indicator light's on / off state. Once the "normal" indicator light is detected to be off, indicating an equipment malfunction, the system immediately controls a relay via optocoupler isolation and a drive module, triggering an audible and visual alarm. This method achieves automatic monitoring of the equipment's operating status and remote audible and visual alarms, improving the timeliness and reliability of monitoring while avoiding direct modification of the original equipment, facilitating installation and maintenance.

[0055] The comparison module includes a voltage comparator U2A, whose non-inverting input receives the photosensitive signal; when the photosensitive signal voltage is higher than the reference voltage, the voltage comparator U2A outputs a high level; when the photosensitive signal voltage is lower than the reference voltage, the voltage comparator U2A outputs a low level.

[0056] The comparison module further includes: potentiometer VR1, fifth capacitor C5, fourth resistor R4, fifth resistor R5, and third light-emitting diode D3; wherein:

[0057] The potentiometer VR1 is used to set the reference voltage, and its sliding terminal is connected to the inverting input terminal of the voltage comparator U2A; one fixed terminal of the potentiometer VR1 is connected to the output terminal of the filter unit, and the other fixed terminal is grounded.

[0058] The non-inverting input of the voltage comparator U2A is connected to the output of the photosensitive signal acquisition module;

[0059] The positive terminal of the voltage comparator U2A is connected to one end of the fifth capacitor C5 and then connected to the 5V DC power output of the power conversion module; the other end of the fifth capacitor C5 is grounded.

[0060] The ground terminal of the voltage comparator U2A is grounded;

[0061] The output terminal of the voltage comparator U2A is connected in sequence to one end of the fourth resistor R4 and the cathode of the third light-emitting diode D3, and then connected to the cathode of the light-emitting diode on the input side of the optocoupler D5 in the optocoupler isolation module.

[0062] The anode of the third light-emitting diode D3 is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the other end of the fourth resistor R4 and then connected to the 5V DC power output by the power conversion module.

[0063] When the voltage comparator U2A outputs a high level, the third LED D3 is turned off and the indicator light of the remote control box of the rangefinder is lit.

[0064] When the voltage comparator U2A outputs a low level, the third LED D3 is turned on and illuminates, indicating that the working indicator light of the rangefinder remote control box is off.

[0065] This invention introduces an adjustable potentiometer VR1 into the comparison module to set the reference threshold value of the voltage comparator. The trigger threshold can be flexibly adjusted according to the ambient lighting conditions or the difference in the brightness of the indicator lights, which enhances the adaptability and stability of the system, ensures that the equipment status can be accurately identified under different environmental conditions, and improves the monitoring accuracy.

[0066] The optocoupler isolation module includes an optocoupler D5, whose input-side light-emitting diode anode is connected to a DC power supply via a pull-up resistor, and whose cathode is connected to the output terminal of the voltage comparator U2A; when the voltage comparator U2A outputs a high level, the optocoupler D5 is cut off; when the voltage comparator U2A outputs a low level, the optocoupler D5 is turned on.

[0067] The optocoupler isolation module also includes:

[0068] Pull-up resistor R6 and bias resistor R8; one end of the pull-up resistor R6 is connected to the anode of the light-emitting diode on the input side of optocoupler D5, and the other end is connected in sequence to the other end of the fifth resistor R5 and the other end of the fourth resistor R4, and then connected to the 5V DC power supply output by the power conversion module; the emitter of the output side of optocoupler D5 is connected to the base of transistor Q1 in the driver module, and the collector is connected to one end of bias resistor R8; the other end of bias resistor R8 is connected to VCC power supply.

[0069] This invention achieves electrical isolation between the photosensitive signal acquisition module, the comparison module, and other low-voltage signal processing circuits and the relay module by setting up an optocoupler isolation module. This effectively blocks the transmission of the reverse electromotive force generated by the relay coil during the switching process and the high-voltage side interference to the front-end circuits such as the photosensitive signal acquisition module and the comparison module, avoiding false triggering or device damage, and significantly improving the system's anti-interference capability, working stability, and long-term operational safety.

[0070] The driving module includes a transistor Q1, whose base is connected to the emitter of the output side of the optocoupler D5, whose collector is connected to the working power supply through a bias resistor, and whose emitter is grounded; when the optocoupler D5 is turned on, the base of the transistor Q1 is at a high level, and the transistor Q1 is turned on; when the optocoupler D5 is turned off, the base of the transistor Q1 is at a low level, and the transistor Q1 is turned off.

[0071] The driving module further includes: a sixth light-emitting diode D6 and a ninth resistor R9; wherein:

[0072] The cathode of the sixth light-emitting diode D6 is connected to the collector of the transistor Q1, and the anode is connected to one end of the ninth resistor R9; the other end of the ninth resistor R9 is connected to the other end of the bias resistor R8 and then connected to the VCC power supply.

[0073] When transistor Q1 is turned on, the sixth LED D6 illuminates, indicating that the drive module is working and the relay coil is energized; when transistor Q1 is turned off, the sixth LED D6 is off, indicating that the drive module is not working.

[0074] The relay module includes a relay coil and a switch contact. One end of the relay coil is connected to a power supply, and the other end is connected to the collector of the transistor Q1. When the transistor Q1 is turned on, the relay coil is energized and closed, and one end of its normally open contact is closed with one end of the common terminal. When the transistor Q1 is turned off, the relay coil is de-energized and released, and the normally open contact is disconnected from the common terminal.

[0075] In this embodiment, the relay module further includes an output port OUT1; the output port OUT1 includes terminal 1, terminal 2 and terminal 3; wherein:

[0076] The other end of the normally open contact is connected to the audible and visual alarm via terminal 1, and the other end of the common terminal is connected to the VCC power supply via terminal 2. Figure 2 VCC or VCC1 in the middle is a 12V DC power supply; terminal 3 is grounded.

[0077] The relay module also includes: a seventh diode D7;

[0078] One end of the relay coil is connected in sequence to the cathode of the seventh diode D7, the other end of the ninth resistor R9, and the other end of the bias resistor R8, and then connected to the VCC power supply; the other end of the relay coil is connected to the anode of the seventh diode D7 and then to the collector of the transistor Q1.

[0079] When transistor Q1 is turned on, the relay coil is energized, the normally open contact closes, and the audible and visual alarm is powered through terminal 1. A circuit is formed between terminals 1 and 2, thus triggering the audible and visual alarm. When the equipment returns to normal and the indicator light illuminates, transistor Q1 is turned off, the relay coil is de-energized, the normally open contact opens, and the alarm stops working. Through this output port OUT1, an external audible and visual alarm device can be easily connected to extend and amplify the alarm signal.

[0080] In this embodiment, the working principle of the status monitoring system includes:

[0081] 1. When the working indicator light is off: The rangefinder is in an abnormal state. The "normal" indicator light on the remote control box is off, and the resistance of the photoresistor R3 increases due to the lack of light, causing the voltage output by the photosensitive signal acquisition module to decrease. This voltage is compared with the reference voltage set by the potentiometer VR1 by the comparator module, and the voltage comparator U2A outputs a low level. This low level turns on the optocoupler D5, which in turn turns on the transistor Q1 in the drive module, energizing the relay coil and closing its normally open contact. At this time, the external audible and visual alarm is powered on through the OUT1 port, forming a circuit and emitting an audible and visual alarm signal to remind the on-duty personnel of the equipment malfunction.

[0082] 2. When the working indicator light is on: The rangefinder is operating normally, the "normal" indicator light remains on, the resistance of the photoresistor R3 decreases under light, and the output voltage of the photosensitive signal acquisition module increases. This voltage is higher than the reference voltage of the comparator module, the voltage comparator U2A outputs a high level, the optocoupler D5 is cut off, the transistor Q1 is not conducting, the relay coil is de-energized and released, and the normally open contact opens. The audible and visual alarm is de-energized and does not emit an alarm signal; the system is in normal monitoring mode.

[0083] The status monitoring system also includes:

[0084] like Figure 2 The power conversion module shown is used to connect to a 12V DC power supply (via Power input) and split the 12V DC power supply into two outputs: one output is used as the working power supply to directly provide power to the drive module, relay module and audible and visual alarm; the other output is regulated and converted to 5V DC power supply to power the photosensitive signal acquisition module, comparison module and optocoupler isolation module.

[0085] This embodiment of the status monitoring system includes a photosensitive signal acquisition module, a comparison module, an optocoupler isolation module, a driver module, and a relay module. The photoresistor senses the on / off state of the indicator light on the remote control box and outputs a corresponding photosensitive signal. The comparison module compares the photosensitive signal with a reference voltage to control the output level. The optocoupler isolation module achieves signal transmission and electrical isolation. The driver module responds to the optocoupler output and controls the switching of the transistor. The relay module activates when the transistor is conducting, connecting an external audible and visual alarm. When the rangefinder malfunctions and the indicator light goes out, the system automatically triggers an audible and visual alarm, extending and amplifying the alarm signal. This invention solves the problems of low alarm volume and lack of signal output interface in the original remote control box, improving the timeliness and reliability of monitoring, and is suitable for equipment status monitoring in noisy environments such as airports.

[0086] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0087] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A status monitoring system for a rangefinder remote control box, characterized in that, include: The photosensitive signal acquisition module is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder and output a photosensitive signal; When the indicator light is on, the photosensitive signal voltage increases; when the indicator light is off, the photosensitive signal voltage decreases. The comparison module includes a voltage comparator U2A, whose non-inverting input receives the photosensitive signal; when the photosensitive signal voltage is higher than the reference voltage, the voltage comparator U2A outputs a high level; when the photosensitive signal voltage is lower than the reference voltage, the voltage comparator U2A outputs a low level. The optocoupler isolation module includes an optocoupler D5, whose input-side light-emitting diode anode is connected to a DC power supply via a pull-up resistor, and whose cathode is connected to the output terminal of the voltage comparator U2A; when the voltage comparator U2A outputs a high level, the optocoupler D5 is cut off; when the voltage comparator U2A outputs a low level, the optocoupler D5 is turned on. The driving module includes a transistor Q1, whose base is connected to the emitter of the output side of the optocoupler D5, whose collector is connected to the working power supply through a bias resistor, and whose emitter is grounded; when the optocoupler D5 is turned on, the base of the transistor Q1 is at a high level, and the transistor Q1 is turned on; when the optocoupler D5 is turned off, the base of the transistor Q1 is at a low level, and the transistor Q1 is turned off. The relay module includes a relay coil and a switch contact. One end of the relay coil is connected to a power supply, and the other end is connected to the collector of the transistor Q1. When the transistor Q1 is turned on, the relay coil is energized and closed, and one end of its normally open contact is closed with one end of the common terminal. When the transistor Q1 is turned off, the relay coil is de-energized and released, and the normally open contact is disconnected from the common terminal. The other end of the normally open contact is connected to an audible and visual alarm, and the other end of the common terminal is connected to the VCC power supply.

2. The status monitoring system for a rangefinder remote control box according to claim 1, characterized in that, The status monitoring system also includes: The power conversion module is used to connect to a 12V DC power supply and divide the 12V DC power supply into two outputs: one output is used as the working power supply to directly supply the drive module, relay module and audible and visual alarm; the other output is regulated and converted into a 5V DC power supply to supply power to the photosensitive signal acquisition module, comparison module and optocoupler isolation module.

3. The status monitoring system for a rangefinder remote control box according to claim 2, characterized in that, The photosensitive signal acquisition module includes: The filtering unit is used to connect to the 5V DC power supply output from the power conversion module and filter it before outputting the output. The photosensitive unit includes a photoresistor R3, a fourth capacitor C4, and a second resistor R2; wherein: The photoresistor R3 is used to sense the on / off state of the working indicator light on the remote control box of the rangefinder; One end of the photoresistor R3 is connected to one end of the fourth capacitor C4 and then connected to the output of the filter unit. The other end of the photoresistor R3 is connected to one end of the second resistor R2 and the other end of the fourth capacitor C4, and serves as the output of the photosensitive signal, connected to the non-inverting input of the voltage comparator U2A in the comparison module. The other end of the second resistor R2 is grounded.

4. The status monitoring system for a rangefinder remote control box according to claim 3, characterized in that, The filtering unit includes: a first capacitor C1 and a first resistor R1; wherein: One end of the first resistor R1 is connected to one end of the first capacitor C1 and then connected to the 5V DC power output by the power conversion module. The other end is connected to the other end of the first capacitor C1 and then grounded.

5. A status monitoring system for a rangefinder remote control box according to claim 4, characterized in that, The comparison module further includes: potentiometer VR1, fifth capacitor C5, fourth resistor R4, fifth resistor R5, and third light-emitting diode D3; wherein: The potentiometer VR1 is used to set the reference voltage, and its sliding terminal is connected to the inverting input terminal of the voltage comparator U2A; one fixed terminal of the potentiometer VR1 is connected to the output terminal of the filter unit, and the other fixed terminal is grounded. The non-inverting input of the voltage comparator U2A is connected to the output of the photosensitive signal acquisition module; The positive terminal of the voltage comparator U2A is connected to one end of the fifth capacitor C5 and then connected to the 5V DC power output of the power conversion module; the other end of the fifth capacitor C5 is grounded. The ground terminal of the voltage comparator U2A is grounded; The output terminal of the voltage comparator U2A is connected in sequence to one end of the fourth resistor R4 and the cathode of the third light-emitting diode D3, and then connected to the cathode of the light-emitting diode on the input side of the optocoupler D5 in the optocoupler isolation module. The anode of the third light-emitting diode D3 is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected to the other end of the fourth resistor R4 and then connected to the 5V DC power output by the power conversion module.

6. A status monitoring system for a rangefinder remote control box according to claim 5, characterized in that, When the voltage comparator U2A outputs a high level, the third LED D3 is turned off and the indicator light of the remote control box of the rangefinder is lit. When the voltage comparator U2A outputs a low level, the third LED D3 is turned on and illuminates, indicating that the working indicator light of the rangefinder remote control box is off.

7. A status monitoring system for a rangefinder remote control box according to claim 6, characterized in that, The optocoupler isolation module also includes: Pull-up resistor R6 and bias resistor R8; one end of the pull-up resistor R6 is connected to the anode of the light-emitting diode on the input side of optocoupler D5, and the other end is connected in sequence to the other end of the fifth resistor R5 and the other end of the fourth resistor R4, and then connected to the 5V DC power supply output by the power conversion module; the emitter of the output side of optocoupler D5 is connected to the base of transistor Q1 in the driver module, and the collector is connected to one end of bias resistor R8; the other end of bias resistor R8 is connected to VCC power supply.

8. A status monitoring system for a rangefinder remote control box according to claim 7, characterized in that, The driving module further includes: a sixth light-emitting diode D6 and a ninth resistor R9; wherein: The cathode of the sixth light-emitting diode D6 is connected to the collector of the transistor Q1, and the anode is connected to one end of the ninth resistor R9; the other end of the ninth resistor R9 is connected to the other end of the bias resistor R8 and then connected to the VCC power supply.

9. A status monitoring system for a rangefinder remote control box according to claim 8, characterized in that, When transistor Q1 is turned on, the sixth LED D6 illuminates, indicating that the drive module is working and the relay coil is energized; when transistor Q1 is turned off, the sixth LED D6 is off, indicating that the drive module is not working.

10. A status monitoring system for a rangefinder remote control box according to claim 8, characterized in that, The relay module also includes: a seventh diode D7; One end of the relay coil is connected in sequence to the cathode of the seventh diode D7, the other end of the ninth resistor R9, and the other end of the bias resistor R8, and then connected to the VCC power supply; the other end of the relay coil is connected to the anode of the seventh diode D7 and then to the collector of the transistor Q1.

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